FIFA's transfer embargo was frozen on appeal by Chelsea this month and Buck admits they moved for Gael Kakuta confident everything was above board.

He told Chelsea TV: "With respect to the Kakuta case, that is now at a tribunal at the Court of Arbitration for Sport in Switzerland and I don't want to comment specifically on the legal aspects but I think the Chelsea position is that we have a very good position in this case.

"This case has been going on for some time, because it was previously at Fifa. We are not totally stupid; we would not have taken the risk of a transfer ban if we thought there was a reasonable chance that it would happen. And we were totally flabbergasted when the ban happened at Fifa. We still think we have a good case and we are looking forward to it being resolved in our favour.

"With regards to January, we asked for the transfer ban to be suspended as an option because several months ago we didn't know if we were going to have any injuries or great opportunities for us to buy a player.

"Now we are directed towards making a purchase in the January transfer window just to see Carlo run around the stadium naked!

"But seriously, we have only used the January transfer window a couple of times. You don't buy players just to buy players; you buy them to fill the need or because they are a better player than the one we have in a particular situation.

"A player really has to suit us for us to buy him, and then, even if a player is available, he has to be available at the right price."